仙茅中两个新的环阿尔廷醇型三萜皂苷

Two New Cycloartane-type Triterpene Glycosides from Curculigo orchioides

从仙茅 (Curculigoorchioides)中分离得到 2个新的环阿尔廷醇型三萜皂苷 ,通过波谱分析鉴定了它们的化学结构 ,即 3β ,11α ,16 β 三羟基环阿尔廷烷 2 4 酮 3 O [β D 吡喃葡糖(1→ 3) β D 吡喃葡糖 (1→ 2 ) β D 吡喃葡糖 ] 16 O α L 阿拉伯糖苷 (1)和 (2 4S ) 3β ,11α ,16 β ,2 4 四羟基环阿尔廷烷 3 O [β D 吡喃葡糖 (1→ 3) β D 吡喃葡糖 (1→ 2 ) β D 吡喃葡糖 ] 2 4 O β D 吡喃葡糖苷 (2 )。

Two new cycloartane-type triterpene glycosides we re isolated from rhizomes of Curculigo orchioides .Their structures were elucid ated as 3β,11α,16β-trihydroxycycloartane-24-one-3-O-[β- D-glucopyranosyl (1→3)-β-D-glucopyranosyl (1→2)-β-D-glucopyranosyl]-16-O-α-L-arabinopyranoside (1) and (24S)-3β,11α,16β,24-tetrahydroxycycloartane- 3-O-[β-D-glucopyranosyl (1→3)-β-D-glucopyra nosyl (1→2)-β-D-glucopyranosyl]-24-O-β-D-g lucopyranoside( 2),respectively,on the basis of their spectroscop ic methods.